Buggy code:
void upgrade_initSystemTableCols ( TransactionController tc , boolean isCoreTable , int tableNum , FormatableBitSet columnsToUpdateSet , DataValueDescriptor [ ] replaceRow ) throws StandardException { } private void bootStrapSystemIndexes ( SchemaDescriptor sd , TransactionController tc , DataDescriptorGenerator ddg , TabInfoImpl ti ) throws StandardException { } public RowLocation [ ] computeAutoincRowLocations ( TransactionController tc , TableDescriptor td ) throws StandardException { } public NumberDataValue getSetAutoincrementValue ( RowLocation rl , TransactionController tc , boolean doUpdate , NumberDataValue newValue , boolean wait ) throws StandardException { } private ConglomerateDescriptor bootstrapOneIndex ( SchemaDescriptor sd , TransactionController tc , DataDescriptorGenerator ddg , TabInfoImpl ti , int indexNumber , long heapConglomerateNumber ) throws StandardException { } public void initSystemIndexVariables ( DataDescriptorGenerator ddg , TabInfoImpl ti , int indexNumber ) throws StandardException { } protected void populateSYSDUMMY1 ( TransactionController tc ) throws StandardException { } public void clearCaches ( ) throws StandardException { } private void addSystemTableToDictionary ( TabInfoImpl ti , SchemaDescriptor sd , TransactionController tc , DataDescriptorGenerator ddg ) throws StandardException { } private ColumnDescriptor makeColumnDescriptor ( SystemColumn column , int columnPosition , TableDescriptor td ) throws StandardException { } private long createConglomerate ( String name , TransactionController tc , ExecRow rowTemplate , Properties properties ) throws StandardException { } public DataValueDescriptor getValueAsDVD ( UUID uuid ) throws StandardException { } public void initializeCatalogInfo ( ) throws StandardException { } private void initializeCoreInfo ( ) throws StandardException { } private void initializeNoncoreInfo ( ) throws StandardException { } public TransactionController getTransactionCompile ( ) throws StandardException { } public TransactionController getTransactionExecute ( ) throws StandardException { } private final TupleDescriptor getDescriptorViaIndex ( int indexId , ExecIndexRow keyRow , ScanQualifier [ ] [ ] scanQualifiers , TabInfoImpl ti , TupleDescriptor parentTupleDescriptor , List list , boolean forUpdate ) throws StandardException { } private void debugGenerateInfo ( StringBuffer strbuf , TransactionController tc , ConglomerateController heapCC , TabInfoImpl ti , int indexId ) { } protected TupleDescriptor getDescriptorViaHeap ( ScanQualifier [ ] [ ] scanQualifiers , TabInfoImpl ti , TupleDescriptor parentTupleDescriptor , List list ) throws StandardException { } private TabInfoImpl getNonCoreTI ( int catalogNumber ) throws StandardException { } protected TabInfoImpl getNonCoreTIByNumber ( int catalogNumber ) throws StandardException { } protected void initSystemIndexVariables ( TabInfoImpl ti ) throws StandardException { } private void clearNoncoreTable ( int nonCoreNum ) { } public void faultInTabInfo ( TabInfoImpl ti ) throws StandardException { } public static ExecIndexRow getIndexRowFromHeapRow ( IndexRowGenerator irg , RowLocation rl , ExecRow heapRow ) throws StandardException { } public int getEngineType ( ) { } public long getSYSCOLUMNSHeapConglomerateNumber ( ) { } void addSYSCOLUMNSIndex2Property ( TransactionController tc , long index2ConglomerateNumber ) { } private long getBootParameter ( Properties startParams , String key , boolean required ) throws StandardException { } public String getSystemSQLName ( ) { StringBuffer generatedSystemSQLName = new StringBuffer ( "SQL" ) ; synchronized ( this ) { long timeNow = ( ( System . currentTimeMillis ( ) ) // 10L ) * 10L ; if ( timeNow > ( timeForLastSystemSQLName ) ) { systemSQLNameNumber = 0 ; calendarForLastSystemSQLName . setTime ( new Date ( timeNow ) ) ; timeForLastSystemSQLName = timeNow ; } else { ( systemSQLNameNumber ) ++ ; if ( ( systemSQLNameNumber ) == 10 ) { systemSQLNameNumber = 0 ; timeForLastSystemSQLName = ( timeForLastSystemSQLName ) + 10L ; calendarForLastSystemSQLName . setTime ( new Date ( timeForLastSystemSQLName ) ) ; } } generatedSystemSQLName . append ( DataDictionaryImpl . twoDigits ( calendarForLastSystemSQLName . get ( Calendar . YEAR ) ) ) ; generatedSystemSQLName . append ( DataDictionaryImpl . twoDigits ( ( ( calendarForLastSystemSQLName . get ( Calendar . MONTH ) ) + 1 ) ) ) ; generatedSystemSQLName . append ( DataDictionaryImpl . twoDigits ( calendarForLastSystemSQLName . get ( Calendar . DAY_OF_MONTH ) ) ) ; <START_BUG> generatedSystemSQLName . append ( DataDictionaryImpl . twoDigits ( calendarForLastSystemSQLName . get ( Calendar . HOUR ) ) ) ; <END_BUG> generatedSystemSQLName . append ( DataDictionaryImpl . twoDigits ( calendarForLastSystemSQLName . get ( Calendar . MINUTE ) ) ) ; generatedSystemSQLName . append ( DataDictionaryImpl . twoDigits ( calendarForLastSystemSQLName . get ( Calendar . SECOND ) ) ) ; generatedSystemSQLName . append ( DataDictionaryImpl . twoDigits ( ( ( int ) ( ( calendarForLastSystemSQLName . get ( Calendar . MILLISECOND ) ) // 10 ) ) ) ) ; generatedSystemSQLName . append ( systemSQLNameNumber ) ; } return generatedSystemSQLName . toString ( ) ; } private static String twoDigits ( int val ) { } public void setAutoincrementValue ( TransactionController tc , UUID tableUUID , String columnName , long aiValue , boolean incrementNeeded ) throws StandardException { } private RowLocation computeRowLocation ( TransactionController tc , TableDescriptor td , String columnName ) throws StandardException { } public RowLocation getRowLocationTemplate ( LanguageConnectionContext lcc , TableDescriptor td ) throws StandardException { } public void addTableDescriptorToOtherCache ( TableDescriptor td , Cacheable c ) throws StandardException { } public void dropStatisticsDescriptors ( UUID tableUUID , UUID referenceUUID , TransactionController tc ) throws StandardException { } private static LanguageConnectionContext getLCC ( ) { } private SchemaDescriptor newSystemSchemaDesc ( String name , String uuid ) { } private SchemaDescriptor newDeclaredGlobalTemporaryTablesSchemaDesc ( String name ) { } public boolean checkVersion ( int requiredMajorVersion , String feature ) throws StandardException { } void createSystemSps ( TransactionController tc ) throws StandardException { } protected void createSPSSet ( TransactionController tc , boolean net , UUID schemaID ) throws StandardException { } private final UUID createSystemProcedureOrFunction ( String routine_name , UUID schema_uuid , String [ ] arg_names , TypeDescriptor [ ] arg_types , int num_out_param , int num_result_sets , short routine_sql_control , TypeDescriptor return_type , TransactionController tc , String procClass ) throws StandardException { } private final UUID createSystemProcedureOrFunction ( String routine_name , UUID schema_uuid , String [ ] arg_names , TypeDescriptor [ ] arg_types , int num_out_param , int num_result_sets , short routine_sql_control , TypeDescriptor return_type , TransactionController tc ) throws StandardException { } private final void create_SYSCS_procedures ( TransactionController tc ) throws StandardException { } protected final void create_SYSIBM_procedures ( TransactionController tc ) throws StandardException { }

Fix:
generatedSystemSQLName . append ( DataDictionaryImpl . twoDigits ( calendarForLastSystemSQLName . get ( Calendar . HOUR_OF_DAY ) ) ) ;